Expanded-metal structure.



No. 67mm. Patented marl 26, mol.'

f c. B. WHITE. i

EXPNDED METAL STRUCTURE.`

(Application filed June 23, 1900.) (N. o M o d e 2 Sheuts-Sheel 2.

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W/TNESSES irren srnezirreemon" forming para of Leners rarest No. evoeezeated i apniqanniiieii-5tne 23,1900. semina.

"Be it khownthat I, `Cimannon B. WHITE, mechanical engineer, a resident of the city of New York, inthe State of New-York, have invented certain new and useful Improvements in EXpanded-Metal .Structures for Lathing and otherUses, of whichthe following is a description accompanied by drawings.

The invention, is particularlynsefni for inetallic lathing ior fireproof construction of buildings; but it is not limited to such use, as it forms an `excellent screen or sieve and is capable of a great variety of uses.

Expanded-metal structures formed by slitting sheet metal and then drawing it apart and expandingg.r it so that the slitted portions form an open-work.structure have longbeen known. Also deeplycorrugated ribs have been formed in such structures, so that when they are secured to the face of a wall or other support by means of the ribs the open-Work structure will be held away from and in front of the wall, leaving an interval behind it. Such stri'ictnres have been termen self-fun rings,r laths. In most instances the expansion of the sheet metal has been in the general plane of the structure, so that all the open- .work portion or slatted portieri lies in one general plane.

Under the present invention portions of the sheet metal are expanded perpendienlarly or transversely to the general piane of the struc- `ture. In this way an open-work or honeycomb strnctnreis produced which may, if desired,be several inches in thielmess,a11d which may receive plaster or mortar on both faces and forni when supported by vertical rods or wires the center of a partition-wall.

In the accompanying drawings several forms of the invention areshown.

Figure l shows a portion of a sheet-metal blank after it has been 'cut or slitted ready for the formation ot the-improved expandedmetal structure. Fig. 2 is an edge view of the same. Fig. Si is an end view ot the finished expandedmetal structure. Fig. l is a side View of the saine. Fig. 5 is a face View. Fig. h' shows a partial end view of another forni of the invention made from the saine blank, Fig. l. Fig. 7 is a Face view of the saine. Fig. 8 shows a slightly-modified form of blank. Fig. fl is an odge view of the same. Fig. l0

cLARENoE e. WHITE, or New roeien.

arrancan-.METAL sirene-runs.

an end view of oneforxnzof the n'veiiti Fi It.' nieren es; reci. 21.312. nimtdem" f on gs;

as produced'["rom theblank show y and .9: Figs. 1l andl2 show an endview a dii55 a face view of a modification orlnrtherdevel-` l opment ofthe form'of the in ventionshowniin Figs. 3, et, and 5. l 'I The expanded-metal structure of thep'resA ent invention is characterized by tlieopeir-` ing or expansion of the slitted portions tran. versely to the general planelof the st-ructur The invention is capable of a great "variety of embodiments `and variatienmiseveral o which are illustrated inthe drawings torni shown inFgigs'. 3, .4," and willi` bv described, commencing the explanatio b` al? clear n nderstanding,r of the slittedbla'nhshovvn'f n in Figs. l and 2, from which. theexp'anded'a'iii metal structure 'may be made. Series of slits 7o leaving narrow strips or slats s between them are formed at intervals in the metal sheet, leaving,r unslitted portions or ribs fr r' between the slitted portions orthe slitted sections. Alternate ribs are lettered, respectively, 'r r and 'r' r'. The sheet may be laid on a suitable table, and wh ile hold ing the ribs r r down upon the table the ribs r r' may he forced upward, expanding the slitted portions transversely to the plane of the sheet until the slats s assume the positions shown in Figs. 3, 4, and 5. Each slat s is bent at two points, as indi-V cated hy the short dotted lines b b in Fig. l. In the structure when so expanded the ribs o* r lie at one side of and beneath the central or general pianep n of the structure, and the 1 ribs r' v" lie above or on the other side of the plane. The slats s,\vhich form the openwvorkl portions, lie transversely to the plane, as clearly seen in the figures. The ribsrr have not been drawn away from each other. Neither have the ribs r' Ir' been drawn away from each other;` but all the ribs fr r have been drawn away from all the ribs r r transversely to the plane p n. 'lhis torni of strnctnre makes a very goed sieve for liquids, as the slats .s are all presented cdfgewise to the llow of the liquid through the sieve. The most important use for this form of strutlii is lor lathing, as the'plaster or mortar finds an excellent nien-work to which it can cling firmly.

In the forni shown in Figs. 6 and 7 a furtherexpansion transverse to the central plane p 'n is shown. The ribs fr" are raised above the ribs rr' and the ribs 'r lie below the ribs 7"', as clearly shown.

The blank shown in Figs. 8 and 9 differs from that shown in 'Fig'. 1 slightly. The inclinations of the successive rows of slits which form the slats s are arranged in dilerent order. This blank may lie expanded to form the structure shown in Fig. 10, differing slightly' from that shown in Figs. 3, 4t, and 5.

Any ofthese expanded-metal structures may be further modified by bendingl or folding some or all of the ribsr-r'. For example, in Figs. 11 and 'l2 a modification of the strueture shown in Figs. 3, 4, and is shown, the second, third, fourth, fifth, and sixth "ribs being ben tfas shown, and a portion of the sti-neture between thel second and sixth ribs beinf,r thereby rendered thin and Vflat, as is apparent in Fig. 11. In this form the portions marked fin the figures are expanded transversely to theplane p fn, while theintervening portions lie entirely at one side of. the plane p n, as

shown. This form of the invention is espeeially valuable for latlling, as the portions j' may be seem-ed to a wall or other support, as shown in section in Fig. 11, and the intermediate expanded portions be held away from the wallseparated by an interval therefrom, and be adapted to receive and support a eemparatively thin layer of mortar o r plaster.

Having now explained the invention and the principles involved and thefvaluable technical results obtained thereby, I elaim as the characteristic and patentable features o f the invention the following:

1. A slitted and expanded sheet met-al structure of alternate slitted expanded portions and ribs, some at least of the slitted portions bei ng expanded transversely to the general plane of the structure, substantially as explained.

2. A slitted and expanded sheet metal strnetnre of alternate slitted expanded portions and' ribs, some at least of the slitted portions being expanded transversely to the general plane of the structure, and some of the ribsdying above the general central plane of the structure, and other ribs lyingr below the said plane, snbstz'nitially as explained.

3. The img )rovement in art of making expanded-meta1 structures which Consists in dis plaeiin,r alternate ribs between slitted portions in opposite directions relatively to the central plane of the struc-ture, snbstantiallyas explained. .-1

Signed this 21st day of June, 1900, at New York, N. Y.

CLARENCE l.. WHITE.

Witnesses: I/

llnNnv SAMUEL Mon'roN', Einvimo A. FnEsnMAN. 

